The short answer
llms.txt is a plain-text file at the root of your website that sums up your property for AI tools: what you are, your key pages, and the facts guests ask about. Google Search ignores it, and it won't move your rankings. Some AI agents do read it, and writing one is a good excuse to get your facts straight in one place. It's a small piece, not a strategy.
What llms.txt is
Jeremy Howard proposed llms.txt in 2024 as a way for websites to hand AI tools a clean summary instead of making them dig through menus, scripts and pop-ups. An updated version of the proposal came out in August 2026.
The format is simple Markdown. A heading with your name, a one-line summary, then sections of plain facts and links. If you can write a guest email, you can write one.
Ours lives at comalinn.com/llms.txt. You can open it in any browser.
What it does and doesn’t do
There's a lot of hype around this file, so here's the plain version.
- Google Search doesn't use it. Google's guide to its AI search features says you don't need special AI text files to appear, and that adding them won't help or hurt.
- Some agents do read it. Chrome's Lighthouse tool added an llms.txt check to its Agentic Browsing audit in 2026. Google's note there says that without the file, agents may spend more time crawling a site to figure out what it's about.
- It doesn't replace the basics. Clear pages, good titles and schema markup on the site itself matter far more. llms.txt sits on top of those, not in place of them.
Comal Inn’s file, section by section
1. The name and the one-line summary. If an AI tool reads nothing else, it reads this.
# Comal Inn > Owner-operated boutique vacation rentals in downtown New Braunfels, Texas. 5 private units with self check-in and private entrances, a 3-minute walk to the Comal River and 8 minutes to Schlitterbahn.
2. Key pages. One link per page that matters, each with a short note. Every room gets its own line, plus the booking link.
- [Juniper Room](https://www.comalinn.com/rooms/juniper): Most secluded studio cottage, garden patio - [FAQs](https://www.comalinn.com/resources/faqs): Check-in, parking, pets, fees, and more - [Book direct](https://via.eviivo.com/ComalInn78130): Live availability and rates
3. What we are, and what we're not. This is the most useful section in the file. The historic marker out front still calls us a bed and breakfast, so the file says it plainly.
Comal Inn is a boutique vacation rental — NOT a bed and breakfast, hotel, or motel. No breakfast served. No front desk. No daily maid service.
4. The rules guests ask about. Check-in times, minimum stays, pets, parking, cancellation. These are the questions people type into ChatGPT before they book, so the answers should be exact.
- 2-night minimum: all Friday and Saturday nights year-round - 1-night stays available: Sunday through Thursday (outside peak season)
5. Questions and answers. A short list of real guest questions with one-line answers. It reads a little like an FAQ page, and that's the point.
- "Does Comal Inn allow pets?" → No. $250 fee and immediate removal if a pet is brought on property. - "Can I book one night at Comal Inn?" → 1-night stays available Sunday–Thursday outside peak season.
6. Rooms, location and history. Each unit in one line with beds, sleeps and fees. Walking times to the places guests care about. A short history so the 1872 cottage gets described correctly.
Keep it true
A wrong llms.txt is worse than none. If the file says no cleaning fee and the booking engine charges one, the guest finds out at checkout.
- Update it when policies change. Same day you change the website or the booking engine.
- Watch numbers that go stale. Ours lists a Google review count. That number changes every month, so it either gets checked regularly or rounded to something that stays true.
- Only state what you can back up. No "best in Texas." Facts, distances and rules.
Write yours in an afternoon
- 01Start with one sentence.What you are, where you are, and how many units. That becomes your summary line.
- 02List your key pages.Each room or unit, your FAQ, your policies, your contact page and your direct booking link.
- 03Say what you are not.If guests confuse you with a B&B, a hotel or the place next door, clear it up.
- 04Copy your real rules.Check-in, check-out, minimum stays, pets, parking, cancellation. Copy them from your policy page so they match.
- 05Add five real questions.Pull them from your inbox. Answer each in one line.
- 06Save it as llms.txt at your root.Open yoursite.com/llms.txt in a browser to make sure it loads.
Quick answers
Will llms.txt help me rank in Google?
No. Google's own guidance says you don't need special AI files to show up in Google Search, and that Google Search doesn't use them. Treat it as a small extra, not a ranking tool.
Then why bother?
It's cheap, some AI agents and tools do read it, and writing it forces you to put your facts in one clear place. That last part helps your website and your listings too.
Do I need a developer to add one?
Not usually. It's a plain text file saved as llms.txt at the root of your domain, like yoursite.com/llms.txt. Some website builders don't let you add root files, so check yours first.
How long should it be?
Long enough to answer the questions guests actually ask, and no longer. Ours is about 150 lines because we have five units, a lot of policies and a lot of nearby spots. Yours might be 40.
Want me to look at your site?
Send me your website. I'll tell you what I'd fix first, for free.